Added ipv4 configuration type

diff --git a/src/core/settings.c b/src/core/settings.c
index 0de697e..e15fc29 100644 (file)
--- a/src/core/settings.c
+++ b/src/core/settings.c
@@ -21,6 +21,8 @@
 #include <string.h>
 #include <errno.h>
 #include <assert.h>
+#include <vsprintf.h>
+#include <gpxe/in.h>
 #include <gpxe/settings.h>
 
 /** @file
@@ -195,3 +197,57 @@ struct config_setting_type config_setting_type_string __config_setting_type = {
        .show = show_string,
        .set = set_string,
 };
+
+/**
+ * Show value of IPv4 setting
+ *
+ * @v context          Configuration context
+ * @v setting          Configuration setting
+ * @v buf              Buffer to contain value
+ * @v len              Length of buffer
+ * @ret rc             Return status code
+ */
+static int show_ipv4 ( struct config_context *context,
+                      struct config_setting *setting,
+                      char *buf, size_t len ) {
+       struct dhcp_option *option;
+       struct in_addr ipv4;
+
+       option = find_dhcp_option ( context->options, setting->tag );
+       if ( ! option )
+               return -ENOENT;
+       dhcp_ipv4_option ( option, &ipv4 );
+       snprintf ( buf, len, inet_ntoa ( ipv4 ) );
+       return 0;
+}
+
+/** Set value of IPV4 setting
+ *
+ * @v context          Configuration context
+ * @v setting          Configuration setting
+ * @v value            Setting value (as a string)
+ * @ret rc             Return status code
+ */ 
+static int set_ipv4 ( struct config_context *context,
+                     struct config_setting *setting,
+                     const char *value ) {
+       struct dhcp_option *option;
+       struct in_addr ipv4;
+       int rc;
+       
+       if ( ( rc = inet_aton ( value, &ipv4 ) ) != 0 )
+               return rc;
+       option = set_dhcp_option ( context->options, setting->tag,
+                                  &ipv4, sizeof ( ipv4 ) );
+       if ( ! option )
+               return -ENOMEM;
+       return 0;
+}
+
+/** An IPv4 configuration setting */
+struct config_setting_type config_setting_type_ipv4 __config_setting_type = {
+       .name = "ipv4",
+       .show = show_ipv4,
+       .set = set_ipv4,
+};
+